Substitute for lampblack.



I, p i V j. .i F .I I UNITED STATES PATENT OFFICE. GEORGE e. BLARIDONE, amas w. manor-s, AND mums iaiuieurnnn, on NEW;

- ORLEANS, LOUISIANA.

suns'riru'rn non LAmrn AcK No Drawing.

.Our invention relates to new and useful improvements in compounds in the nature of pigments for inks and paints, the primary object of our invention being the provision of a new and improved substitute for lamp black and one capable of being utilized for. all purposes for which lamp black, is now employed. A still further object of our inventionco'nsists in the manufacture of a compound of the above described character from material which has previously gone to Waste and which, in fact, has been of such nature that its disposal has been a matter of considerable expense.

Ourimproved substitute for lamp black is formed from ricehulls or rice chafi which, to the best of our knowledge up to the pres ent time, has been largely a-waste product. In many rice mills, these hulls or'this chafl' has been partially disposed of and to some benefit by burning it as a fuel, but furnaces of special design are required for this'purpose and the charred hulls, chaff or ashes remaining after the burning can be disposed of only at considerable expense. By our im- 1 proved process, these rice hulls, instead of.-

being a source ofexpense, will become a source of revenue.

In preparing the subt tute lamp black,

the hulls are burned by the aid of a blast fan in a furnace of specialconstruction, such furnace forming no part of our present invention, being well known in the art. The

charred remains resulting from this treatment are then passed through rollers 01' through a suitable pulverizing machine and Specification of Letters Patent.

I resultant thereby broken up into an extremely fine black fiour oi powder which has about onehalf times greater Weight than an equal volume of lamp black and which, to the best of our knowledge, maybe utilized for all purposes for which lamp black is now employed.

Patented Oct. 12-, 1915; Application filed April 1, 1915. Serial m. 18,593. i i

In view ofthe fact that the rice hulls, in

their natural state, are waste product and inasmuch as heretofore. the rice hulls, in burnt state,'have also been a waste product and one extremely difficult to dispose of, the

importance of our present invention, providing a means for;,ut111z1ng them, .with

profit, will be readily appreciated.

Various types of furnaces and various types of rolling mills and pulverizing machines may be employed in the manufacture of our compound and we do not wish in any way to limit ourselves to the use of any class v of furnaces or-machines'for this purpose.

Having thus described the invention, What is claimed as new is:

1. A substitute for lamp black consisting of pulverized burned rice hulls and chaff.

2. A. substitute for lamp black which consists of the pulverized charred bulls and chaff of a grain. 3. The method of forming a substitute for lamp black which consists in burning the hulls and chaff of grain and in pulverizing the charred remains thereof.

4.. The method of forming a substitute for lamp black which consists in burning rice hulls in passing the burned products through rollers and. in further treating the product to reduce it to a fine powder.

' In testimony whereof'we ailix our signatures in presence of two witnesses.

'IGEORGE G. BLARDONE. 1.8.1 CHARLES W. NICHOLS. 1.8. FAURIE BRUGUIERE. 1.3.

. Witnesses ALDWIN BROUPHY,

M. A. DONAHOE. 

